Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c96beeabe78c63…

MALICIOUS

PDF

97.0 KB Created: 2021-03-22 19:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 7bbdf47b8bd54f790fa862155484327a SHA-1: 1d0558f59ddb1b77d47dd055a2f6c5b70c85b4ac SHA-256: e0c96beeabe78c6317d9ac6866b88acd54b92e541766a706b2e8a5dd07c275cd
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL, 'https://botokaw.ru/wix?keyword=minecraft+101+for+parents', indicates a lure related to parenting and Minecraft. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to malicious sites or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://botokaw.ru/wix?keyword=minecraft+101+for+parents PDF link annotation
    • https://wekakukuzibeli.weebly.com/uploads/1/3/4/0/134000436/9196413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_6033d3de24019.pdfIn PDF document text
    • https://kofudavobew.weebly.com/uploads/1/3/4/6/134602163/6d6f70eb.pdfIn PDF document text
    • http://birapemotafew.mygamesonline.org/datorugoka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413976/normal_604d0beadefc4.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/gabungin_file_jadi_satu.pdfIn PDF document text
    • http://kalowodopole.mygamesonline.org/article_370_and_35a_in_gujarati.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388406/normal_60317a27d255a.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/matlab_function_file_extension.pdfIn PDF document text
    • https://tokikagusiwa.weebly.com/uploads/1/3/4/0/134096322/wijit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://19527f6f-7821-4b33-8e58-d909ab9a203f.filesusr.com/ugd/b18fc6_0b3eb8afa1514d369e5939d9d6d1e494.pdf?index=trueIn PDF document text
    • https://7b806e58-2e0f-4c22-b5e1-e0f71c4d6e86.filesusr.com/ugd/8da65f_8f133f59b9e74220a049fe042f21fc8e.pdf?index=trueIn PDF document text
    • https://07e0a16e-b77d-475b-b724-88bbaedb347c.filesusr.com/ugd/8e9e2f_c4aeb4e49cb84f12abd49832c6d261b9.pdf?index=trueIn PDF document text
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_a30d043bc4f645288de307d03844936c.pdf?index=trueIn PDF document text
    • http://gixarewujedel.atwebpages.com/la_esposa_que_ora_dia_10.pdfIn PDF document text
    • https://357b8bef-7330-4cfe-b31d-389db25c4d5a.filesusr.com/ugd/4c76bf_18b56dc7213346b2ab5e3eacf68a07fd.pdf?index=trueIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_4c42f4b305564ae99d2b05da0a0d2a89.pdf?index=trueIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_bda04a1cfd954822a14184a5f286e794.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000130f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F1 4964 bytes
SHA-256: a99d2e45d91c3279e333369a8b749afe053aeeb7c91cac7e025c8d9d795bbf53
font_01_sfnt_off000141d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141D2 11400 bytes
SHA-256: fb00a675656aefab6ec0c6de9a4bcc26940fe5f338604c454cf620fca80c5f57
font_02_sfnt_off000168a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168A5 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34